Procede de production d'une suspension homogene et stable composee de produits initiaux oxydes

Method for producing homogenous and stable oxidized preliminary product suspensions

Verfahren zur herstellung einer homogenen und stabilen suspension aus oxidvorprodukten

Abstract

L'invention concerne un procédé de production d'une suspension homogène pouvant être utilisée pour la production de poudres supraconductrices par voie d'oxydation. Selon ce procédé, des produits initiaux oxydes du groupe de Mg, Ca, Ba, Sr, Bi, Pb, Cu, Al, Zr, Hf, Sc, Y, TI, Pt, Ag, Hg et des éléments terres rares insolubles ou peu solubles dans l'eau sont dispersés dans l'eau. La suspension ainsi obtenue est stabilisée par voie électrostatique à un pH compris entre 1,5 et 5.
Die Erfindung betrifft ein Verfahren zur Herstellung einer homogenen Suspension, die zur Herstellung von oxidischen supraleitenden Pulvern verwendet werden kann, bei dem schwer wasserlösliche oder in Wasser unlösliche Vorprodukte der Oxide aus der Gruppe von Mg, Ca, Ba, Sr, Bi, Pb, Cu, Al, Zr, Hf, Sc, Y, Tl, Pt, Ag, Hg und Seltenerdelementen in Wasser dispergiert werden, bei dem die hierbei gebildete Suspension bei einem pH-Wert im Bereich von 1,5 bis 5 elektrostatisch stabilisiert wird.
The invention relates to a method for producing a homogenous suspension that can be used in the production of oxidic supraconductive powders, wherein poorly water-soluble or water insoluble oxidized preliminary products from groups Mg, Ca, Ba, Sr, Bi, Pb, Cu, Al, Zr, Hf, Sc, Y, Tl, Pt, Ag, Hg and rare earth elements are dispersed in water. The suspension thus obtained is electrostatically stabilized at a pH value ranging from 1.5 to 5.

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Patent Citations (8)

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